fixed conversion of NAN's

[r15701]

diff --git a/ir/tv/fltcalc.c b/ir/tv/fltcalc.c
index db427a0..b38d5b9 100644 (file)
--- a/ir/tv/fltcalc.c
+++ b/ir/tv/fltcalc.c
@@ -1210,6 +1210,13 @@ fp_value *fc_cast(const fp_value *value, char exp_size, char mant_size, fp_value
                return result;
        }
 
+       if (value->desc.clss == NAN) {
+               if (sc_get_highest_set_bit(_mant(value)) == value->desc.mantissa_size + 1)
+                       return fc_get_qnan(exp_size, mant_size, result);
+               else
+                       return fc_get_snan(exp_size, mant_size, result);
+       }
+
        /* set the descriptor of the new value */
        result->desc.exponent_size = exp_size;
        result->desc.mantissa_size = mant_size;